Bark-cutting machine



(No Model.)

J. O. I-IAGERTY.

I BARK CUTTING MACHINE. No. 334,859. Patented Jan. 26, 1886'.

I M A! I ,M M

I M V 1 A INVENTOR:

By vaumi g ATTORNEYS.

Srarns JOHN G. HAGERTY, OF SANTA CRUZ, CALIFORNIA.

BARK- -CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 334,859, dated January26, 1886.

Application filed May 29, 1885. Serial No. 167,313. (No model.)

To aZZ whom, it may concern:

Be it known that I, JOHN G. I-IAGERTY, of Santa Cruz, in the county ofSanta Cruz and State of California, have invented a new and ImprovedBark-Cutting Machine, of which the following is a full, clear, and exactdescrip: tion.

The object of my invention is to provide a new andimproved machine forpreparing bark for tanners use.

The invention consists of various parts and combinations of the same,hereinafter more fully described and claimed.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a longitudinal vertical section of the casing of my improvedbark-cutting machine, the cutting-wheel being shown in elevation, thesection being taken on the line y g of Fig. 2. Fig. 2 is a transversevertical section on the line 00 x of Fig. 1, and Fig. 3 is a plan viewof part of the rim of the wheel with a knife attached.

The casing A is placed on a suit-able table or bench, B, and is providedwith the lid A, which is hinged to the casing A and fastened to the samein any suitable manner. The shaft Gextends across within the casing, ismounted in suitable journal-boxes attached to the easing A, and isprovided with a pulley, D, on the outside ofthe casing A, which isrotated by a driving'belt.

To the shalt 0, inside of the casing A, is fastened a wheel, E, by aset-screw, E, or other convenient devices. The wheel E consists of ahub, F, from which extends the center web, G on which is formed theannular beveled rim I, with its bevels H extending from the outer orperipheral edges of said web to the outer side edges of said rim. Thewheel E is also provided with recesses J, in each of which is placed aknife, K, fastened to the wheel E by the clamping-plate L and bolts M.The cutting-edge of each knife K extends a short distance beyond the rimI of the wheel E. The knives K are not as wide as the width of the rimI, so that the bolts M can pass on the outer sides of the knives K,thereby avoiding the necessity of having holes through the side edges ofknives K. The heads of the bolts are countersunk in the rim I of thewheel E, and the clamping-plates L are shaped to conform to the annularbevels H of the wheel E,

as shown in Fig. 2. The guiding-chute N is fastened to the casing A bybelts or other suitable devices, and the lower side, N projects a shortdistance into the casing A at N, leaving room, however, for the knives Kto pass without strikingthe same, which is a trifle narrower than thewidth of the knives K.

The operation of my machine is as follows: The wheel is rapidly rotatedin the direction of the arrow a by means of a driving-belt acting on thepulley D. The bark to be cut is passed into the guidingchute N and restsagainst the inclined side N" of the chute N, and the lower end of thebark is cut off by the revolving knives K when passing the lower point,N, of the chute N. The cut-off ends of the bark pass inward through therecesses J toward the hub F of the wheel E, and are from there ejectedby the centrifugal force of the wheel E over the bevels H and the edges.of the rim I, and pass downward through the opening A in the bottom ofthe casing A and the opening 13 in the table B to a suitable receptacleplaced under the table or bench B. i

The knives K can be set so as to cut coarser or finer by loosening thebolts M and moving the knives K as desired, and the knives can be takenout for grinding or other purposes and replaced without much trouble andeX- pense. I

Having thus described my invention,what I claim as new, and desire tosecure by Letters Patent, is

1. In a bark-cutting machine, a rotating wheel provided with recessesand knives for cutting the bark, and with bevels formed on the rim,between the outer edges of the rim and the web of the wheel, forejecting the cut bark by the centrifugal force of the wheel,substantially as shown and described.

2. In a bark-cutting machine, the casing A,

the hinged lid A, and the chute N, in combination with the rotatingwheel E, provided with the bevels H and the knives K, substantially asshown and described.

3. In a bark-cutting machine, the wheel E, having the recesses J, thebevels H, and the rim I, in combination with the clampingplates L, thebolts M, and the knives K, substantially as shown and described.

' JOHN G. HAGERTY.

Witnesses:

LUoIEN HEATH, HENRY F. KRON.

